{"schemaVersion":3,"id":"CVE-2019-1844","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in certain attachment detection mechanisms of the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of an affected device. The vulnerability is due to improper detection of certain content sent to an affected device. An attacker could exploit this vulnerability by sending certain file types without Content-Disposition information to an affected device. A successful exploit could allow an attacker to send messages that contain malicious content to users.","dates":{"published":"2019-05-03T16:35:26.651Z","modified":"2024-11-19T19:07:52.943Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01696,"percentile":0.76938,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01696},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01696,"percentile":0.76938}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01696,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01696,"percentile":0.76938}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"cisco","product":"cisco email security appliance (esa)","name":"Cisco Email Security Appliance (ESA)","label":"cisco email security appliance (esa)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 11.1.1-030","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 11.1.1-030","eol":null,"hubHref":"/vendor/cisco/cisco_email_security_appliance_esa"},{"vendor":"cisco","product":"email_security_appliance_firmware","name":"email security appliance firmware","label":"email_security_appliance_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"11.1.0-131","noFixRecorded":false,"fixedIn":null}],"versionsText":"11.1.0-131","eol":null,"hubHref":"/vendor/cisco/email_security_appliance"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-esa-bypass","label":"tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-esa-bypass","hostname":"tools.cisco.com","tags":["Vendor Advisory","X Refsource CISCO"]},{"url":"http://www.securityfocus.com/bid/108149","label":"www.securityfocus.com/bid/108149","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2019-05-03T16:35:26.651Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-11-19T19:07:52.943Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T10:40:57.651Z","stale":false,"partial":false}}